2 den - denominator of a real number
13 For real x, den(x) returns the denominator of x when x is expressed
14 in lowest terms with positive denominator. In calc,
15 real values are actually rational values. Each calc real
16 value can be uniquely expressed as:
26 The denominator for this n/d is d.
29 ; print den(7), den(-1.25), den(121/33)
36 NUMBER *qden(NUMBER *x)
41 ## Copyright (C) 1999 Landon Curt Noll
43 ## Calc is open software; you can redistribute it and/or modify it under
44 ## the terms of the version 2.1 of the GNU Lesser General Public License
45 ## as published by the Free Software Foundation.
47 ## Calc is distributed in the hope that it will be useful, but WITHOUT
48 ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
49 ## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
50 ## Public License for more details.
52 ## A copy of version 2.1 of the GNU Lesser General Public License is
53 ## distributed with calc under the filename COPYING-LGPL. You should have
54 ## received a copy with calc; if not, write to Free Software Foundation, Inc.
55 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
57 ## @(#) $Revision: 30.1 $
58 ## @(#) $Id: den,v 30.1 2007/03/16 11:10:42 chongo Exp $
59 ## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/den,v $
61 ## Under source code control: 1995/10/05 04:52:26
62 ## File existed as early as: 1995
64 ## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
65 ## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/